Immune NetworkPub Date : 2023-03-23eCollection Date: 2023-04-01DOI: 10.4110/in.2023.23.e13
Bill Thaddeus Padasas, Erica Españo, Sang-Hyun Kim, Youngcheon Song, Chong-Kil Lee, Jeong-Ki Kim
{"title":"COVID-19 Therapeutics: An Update on Effective Treatments Against Infection With SARS-CoV-2 Variants.","authors":"Bill Thaddeus Padasas, Erica Españo, Sang-Hyun Kim, Youngcheon Song, Chong-Kil Lee, Jeong-Ki Kim","doi":"10.4110/in.2023.23.e13","DOIUrl":"10.4110/in.2023.23.e13","url":null,"abstract":"<p><p>The coronavirus disease 2019 (COVID-19) pandemic is one of the most consequential global health crises in over a century. Since its discovery in 2019, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) continues to mutate into different variants and sublineages, rendering previously potent treatments and vaccines ineffective. With significant strides in clinical and pharmaceutical research, different therapeutic strategies continue to be developed. The currently available treatments can be broadly classified based on their potential targets and molecular mechanisms. Antiviral agents function by disrupting different stages of SARS-CoV-2 infection, while immune-based treatments mainly act on the human inflammatory response responsible for disease severity. In this review, we discuss some of the current treatments for COVID-19, their mode of actions, and their efficacy against variants of concern. This review highlights the need to constantly evaluate COVID-19 treatment strategies to protect high risk populations and fill in the gaps left by vaccination.</p>","PeriodicalId":13307,"journal":{"name":"Immune Network","volume":"23 2","pages":"e13"},"PeriodicalIF":6.0,"publicationDate":"2023-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/ca/4f/in-23-e13.PMC10166656.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9838439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Immune NetworkPub Date : 2023-02-27eCollection Date: 2023-04-01DOI: 10.4110/in.2023.23.e18
Jun-Pyo Choi, Ghazal Ayoub, Jarang Ham, Youngmin Huh, Seung Eun Choi, Yu-Kyoung Hwang, Ji Yun Noh, Sae-Hoon Kim, Joon Young Song, Eu Suk Kim, Yoon-Seok Chang
{"title":"Exercise With a Novel Digital Device Increased Serum Anti-influenza Antibody Titers After Influenza Vaccination.","authors":"Jun-Pyo Choi, Ghazal Ayoub, Jarang Ham, Youngmin Huh, Seung Eun Choi, Yu-Kyoung Hwang, Ji Yun Noh, Sae-Hoon Kim, Joon Young Song, Eu Suk Kim, Yoon-Seok Chang","doi":"10.4110/in.2023.23.e18","DOIUrl":"10.4110/in.2023.23.e18","url":null,"abstract":"<p><p>It has been reported that some exercise could enhance the anti-viral antibody titers after vaccination including influenza and coronavirus disease 2019 vaccines. We developed SAT-008, a novel digital device, consists of physical activities and activities related to the autonomic nervous system. We assessed the feasibility of SAT-008 to boost host immunity after an influenza vaccination by a randomized, open-label, and controlled study on adults administered influenza vaccines in the previous year. Among 32 participants, the SAT-008 showed a significant increase in the anti-influenza antibody titers assessed by hemagglutination-inhibition test against antigen subtype B Yamagata lineage after 4 wk of vaccination and subtype B Victoria lineage after 12 wk (p<0.05). There was no difference in the antibody titers against subtype \"A.\" The SAT-008 also showed significant increase in the plasma cytokine levels of IL-10, IL-1β, and IL-6 at weeks 4 and 12 after the vaccination (p<0.05). A new approach using the digital device may boost host immunity against virus via vaccine adjuvant-like effects.</p><p><strong>Trial registration: </strong>ClinicalTrials.gov Identifier: NCT04916145.</p>","PeriodicalId":13307,"journal":{"name":"Immune Network","volume":"23 2","pages":"e18"},"PeriodicalIF":6.0,"publicationDate":"2023-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/d4/fb/in-23-e18.PMC10166655.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9467552","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Immune NetworkPub Date : 2023-02-24eCollection Date: 2023-02-01DOI: 10.4110/in.2023.23.e1
Yong Woo Jung, Su-Hyung Park, Chang-Duk Jun
{"title":"Back to the T Cell: Basic and Clinical Application.","authors":"Yong Woo Jung, Su-Hyung Park, Chang-Duk Jun","doi":"10.4110/in.2023.23.e1","DOIUrl":"10.4110/in.2023.23.e1","url":null,"abstract":"","PeriodicalId":13307,"journal":{"name":"Immune Network","volume":"23 1","pages":"e1"},"PeriodicalIF":4.3,"publicationDate":"2023-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/6b/cc/in-23-e1.PMC9995990.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9471674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Gut Microbial Metabolites on Host Immune Responses in Health and Disease.","authors":"Jong-Hwi Yoon, Jun-Soo Do, Priyanka Velankanni, Choong-Gu Lee, Ho-Keun Kwon","doi":"10.4110/in.2023.23.e6","DOIUrl":"10.4110/in.2023.23.e6","url":null,"abstract":"<p><p>Intestinal microorganisms interact with various immune cells and are involved in gut homeostasis and immune regulation. Although many studies have discussed the roles of the microorganisms themselves, interest in the effector function of their metabolites is increasing. The metabolic processes of these molecules provide important clues to the existence and function of gut microbes. The interrelationship between metabolites and T lymphocytes in particular plays a significant role in adaptive immune functions. Our current review focuses on 3 groups of metabolites: short-chain fatty acids, bile acids metabolites, and polyamines. We collated the findings of several studies on the transformation and production of these metabolites by gut microbes and explained their immunological roles. Specifically, we summarized the reports on changes in mucosal immune homeostasis represented by the Tregs and Th17 cells balance. The relationship between specific metabolites and diseases was also analyzed through latest studies. Thus, this review highlights microbial metabolites as the hidden treasure having potential diagnostic markers and therapeutic targets through a comprehensive understanding of the gut-immune interaction.</p>","PeriodicalId":13307,"journal":{"name":"Immune Network","volume":"23 1","pages":"e6"},"PeriodicalIF":6.0,"publicationDate":"2023-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/2e/8e/in-23-e6.PMC9995988.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9471678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Immune NetworkPub Date : 2023-02-23eCollection Date: 2023-02-01DOI: 10.4110/in.2023.23.e10
Hanbyeul Choi, Yeaji Kim, Yong Woo Jung
{"title":"The Function of Memory CD8+ T Cells in Immunotherapy for Human Diseases.","authors":"Hanbyeul Choi, Yeaji Kim, Yong Woo Jung","doi":"10.4110/in.2023.23.e10","DOIUrl":"10.4110/in.2023.23.e10","url":null,"abstract":"<p><p>Memory T (Tm) cells protect against Ags that they have previously contacted with a fast and robust response. Therefore, developing long-lived Tm cells is a prime goal for many vaccines and therapies to treat human diseases. The remarkable characteristics of Tm cells have led scientists and clinicians to devise methods to make Tm cells more useful. Recently, Tm cells have been highlighted for their role in coronavirus disease 2019 vaccines during the ongoing global pandemic. The importance of Tm cells in cancer has been emerging. However, the precise characteristics and functions of Tm cells in these diseases are not completely understood. In this review, we summarize the known characteristics of Tm cells and their implications in the development of vaccines and immunotherapies for human diseases. In addition, we propose to exploit the beneficial characteristics of Tm cells to develop strategies for effective vaccines and overcome the obstacles of immunotherapy.</p>","PeriodicalId":13307,"journal":{"name":"Immune Network","volume":"23 1","pages":"e10"},"PeriodicalIF":4.3,"publicationDate":"2023-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/01/e1/in-23-e10.PMC9995995.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9471675","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Immune NetworkPub Date : 2023-02-23eCollection Date: 2023-02-01DOI: 10.4110/in.2023.23.e5
Meyer J Friedman, Haram Lee, June-Yong Lee, Soohwan Oh
{"title":"Transcriptional and Epigenetic Regulation of Context-Dependent Plasticity in T-Helper Lineages.","authors":"Meyer J Friedman, Haram Lee, June-Yong Lee, Soohwan Oh","doi":"10.4110/in.2023.23.e5","DOIUrl":"10.4110/in.2023.23.e5","url":null,"abstract":"<p><p>Th cell lineage determination and functional specialization are tightly linked to the activation of lineage-determining transcription factors (TFs) that bind <i>cis</i>-regulatory elements. These lineage-determining TFs act in concert with multiple layers of transcriptional regulators to alter the epigenetic landscape, including DNA methylation, histone modification and three-dimensional chromosome architecture, in order to facilitate the specific Th gene expression programs that allow for phenotypic diversification. Accumulating evidence indicates that Th cell differentiation is not as rigid as classically held; rather, extensive phenotypic plasticity is an inherent feature of T cell lineages. Recent studies have begun to uncover the epigenetic programs that mechanistically govern T cell subset specification and immunological memory. Advances in next generation sequencing technologies have allowed global transcriptomic and epigenomic interrogation of CD4+ Th cells that extends previous findings focusing on individual loci. In this review, we provide an overview of recent genome-wide insights into the transcriptional and epigenetic regulation of CD4+ T cell-mediated adaptive immunity and discuss the implications for disease as well as immunotherapies.</p>","PeriodicalId":13307,"journal":{"name":"Immune Network","volume":"23 1","pages":"e5"},"PeriodicalIF":4.3,"publicationDate":"2023-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/90/6a/in-23-e5.PMC9995996.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9471677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Immune NetworkPub Date : 2023-02-22eCollection Date: 2023-02-01DOI: 10.4110/in.2023.23.e7
Changhon Lee, Haena Lee, John Chulhoon Park, Sin-Hyeog Im
{"title":"Microbial Components and Effector Molecules in T Helper Cell Differentiation and Function.","authors":"Changhon Lee, Haena Lee, John Chulhoon Park, Sin-Hyeog Im","doi":"10.4110/in.2023.23.e7","DOIUrl":"10.4110/in.2023.23.e7","url":null,"abstract":"<p><p>The mammalian intestines harbor trillions of commensal microorganisms composed of thousands of species that are collectively called gut microbiota. Among the microbiota, bacteria are the predominant microorganism, with viruses, protozoa, and fungi (mycobiota) making up a relatively smaller population. The microbial communities play fundamental roles in the maturation and orchestration of the immune landscape in health and disease. Primarily, the gut microbiota modulates the immune system to maintain homeostasis and plays a crucial role in regulating the pathogenesis and pathophysiology of inflammatory, neuronal, and metabolic disorders. The microbiota modulates the host immune system through direct interactions with immune cells or indirect mechanisms such as producing short-chain acids and diverse metabolites. Numerous researchers have put extensive efforts into investigating the role of microbes in immune regulation, discovering novel immunomodulatory microbial species, identifying key effector molecules, and demonstrating how microbes and their key effector molecules mechanistically impact the host immune system. Consequently, recent studies suggest that several microbial species and their immunomodulatory molecules have therapeutic applicability in preclinical settings of multiple disorders. Nonetheless, it is still unclear why and how a handful of microorganisms and their key molecules affect the host immunity in diverse diseases. This review mainly discusses the role of microbes and their metabolites in T helper cell differentiation, immunomodulatory function, and their modes of action.</p>","PeriodicalId":13307,"journal":{"name":"Immune Network","volume":"23 1","pages":"e7"},"PeriodicalIF":4.3,"publicationDate":"2023-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/cb/d4/in-23-e7.PMC9995987.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9157321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Immune NetworkPub Date : 2023-02-21eCollection Date: 2023-02-01DOI: 10.4110/in.2023.23.e3
Hye-Ran Kim, Jeong-Su Park, Won-Chang Soh, Na-Young Kim, Hyun-Yoong Moon, Ji-Su Lee, Chang-Duk Jun
{"title":"T Cell Microvilli: Finger-Shaped External Structures Linked to the Fate of T Cells.","authors":"Hye-Ran Kim, Jeong-Su Park, Won-Chang Soh, Na-Young Kim, Hyun-Yoong Moon, Ji-Su Lee, Chang-Duk Jun","doi":"10.4110/in.2023.23.e3","DOIUrl":"10.4110/in.2023.23.e3","url":null,"abstract":"<p><p>Microvilli are outer membrane organelles that contain cross-linked filamentous actin. Unlike well-characterized epithelial microvilli, T-cell microvilli are dynamic similar to those of filopodia, which grow and shrink intermittently via the alternate actin-assembly and -disassembly. T-cell microvilli are specialized for sensing Ags on the surface of Ag-presenting cells (APCs). Thus, these finger-shaped microprotrusions contain many signaling-related proteins and can serve as a signaling platforms that induce intracellular signals. However, they are not limited to sensing external information but can provide sites for parts of the cell-body to tear away from the cell. Cells are known to produce many types of extracellular vesicles (EVs), such as exosomes, microvesicles, and membrane particles. T cells also produce EVs, but little is known about under what conditions T cells generate EVs and which types of EVs are released. We discovered that T cells produce few exosomes but release large amounsts of microvilli-derived particles during physical interaction with APCs. Although much is unanswered as to why T cells use the same organelles to sense Ags or to produce EVs, these events can significantly affect T cell fate, including clonal expansion and death. Since TCRs are localized at microvilli tips, this membrane event also raises a new question regarding long-standing paradigm in T cell biology; i.e., surface TCR downmodulation following T cell activation. Since T-cell microvilli particles carry T-cell message to their cognate partner, these particles are termed T-cell immunological synaptosomes (TISs). We discuss the potential physiological role of TISs and their application to immunotherapies.</p>","PeriodicalId":13307,"journal":{"name":"Immune Network","volume":"23 1","pages":"e3"},"PeriodicalIF":4.3,"publicationDate":"2023-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/b0/aa/in-23-e3.PMC9995986.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9455871","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Immune NetworkPub Date : 2023-02-20eCollection Date: 2023-02-01DOI: 10.4110/in.2023.23.e11
Joon Seok, Sung-Dong Cho, Seong Jun Seo, Su-Hyung Park
{"title":"Roles of Virtual Memory T Cells in Diseases.","authors":"Joon Seok, Sung-Dong Cho, Seong Jun Seo, Su-Hyung Park","doi":"10.4110/in.2023.23.e11","DOIUrl":"10.4110/in.2023.23.e11","url":null,"abstract":"<p><p>Memory T cells that mediate fast and effective protection against reinfections are usually generated upon recognition on foreign Ags. However, a \"memory-like\" T-cell population, termed virtual memory T (T<sub>VM</sub>) cells that acquire a memory phenotype in the absence of foreign Ag, has been reported. Although, like innate cells, T<sub>VM</sub> cells reportedly play a role in first-line defense to bacterial or viral infections, their protective or pathological roles in immune-related diseases are largely unknown. In this review, we discuss the current understanding of T<sub>VM</sub> cells, focusing on their distinct characteristics, immunological properties, and roles in various immune-related diseases, such as infections and cancers.</p>","PeriodicalId":13307,"journal":{"name":"Immune Network","volume":"23 1","pages":"e11"},"PeriodicalIF":4.3,"publicationDate":"2023-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/72/cb/in-23-e11.PMC9995991.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9455873","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Immune NetworkPub Date : 2023-02-17eCollection Date: 2023-02-01DOI: 10.4110/in.2023.23.e4
Gap Ryol Lee
{"title":"Molecular Mechanisms of T Helper Cell Differentiation and Functional Specialization.","authors":"Gap Ryol Lee","doi":"10.4110/in.2023.23.e4","DOIUrl":"10.4110/in.2023.23.e4","url":null,"abstract":"<p><p>Th cells, which orchestrate immune responses to various pathogens, differentiate from naïve CD4 T cells into several subsets that stimulate and regulate immune responses against various types of pathogens, as well as a variety of immune-related diseases. Decades of research have revealed that the fate decision processes are controlled by cytokines, cytokine receptor signaling, and master transcription factors that drive the differentiation programs. Since the Th1 and Th2 paradigm was proposed, many subsets have been added to the list. In this review, I will summarize these events, including the fate decision processes, subset functions, transcriptional regulation, metabolic regulation, and plasticity and heterogeneity. I will also introduce current topics of interest.</p>","PeriodicalId":13307,"journal":{"name":"Immune Network","volume":"23 1","pages":"e4"},"PeriodicalIF":4.3,"publicationDate":"2023-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/d0/dc/in-23-e4.PMC9995992.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9455872","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}